diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index ddf2aaaaff..b2f39ea67e 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -130,6 +130,7 @@ Changelog
 ~~~~~~~~~~~~~~~~~~~
 
  * Fix: Allow relation name used for admin commenting to be overridden to avoid conflicts with third-party commenting apps (Matt Westcott)
+ * Fix: Corrected badly-formed format strings in translations (Matt Westcott)
 
 
 2.13.4 (13.07.2021)
diff --git a/docs/releases/2.13.5.rst b/docs/releases/2.13.5.rst
index 04b021e0be..f646c9d877 100644
--- a/docs/releases/2.13.5.rst
+++ b/docs/releases/2.13.5.rst
@@ -14,6 +14,7 @@ Bug fixes
 ~~~~~~~~~
 
  * Allow relation name used for admin commenting to be overridden to avoid conflicts with third-party commenting apps (Matt Westcott)
+ * Corrected badly-formed format strings in translations (Matt Westcott)
 
 Upgrade considerations
 ======================